INTERNATIONAL PATENT: CHINA ENERGY GROUP NINGXIA COAL INDUSTRY CO., LTD., 国家能源集团宁夏煤业有限责任公司, CHINA ENERGY NINGXIA COAL INDUSTRY CO., LTD. COAL CHEMICAL INDUSTRY TECHNOLOGY RESEARCH INSTITUTE, 国家能源集团宁夏煤业有限责任公司煤炭化学工业技术研究院 FILES APPLICATION FOR "METHOD AND SYSTEM FOR PREPARING POLYALPHAOLEFIN LUBRICATING OIL BASE OIL"

GENEVA, Nov. 30 -- CHINA ENERGY GROUP NINGXIA COAL INDUSTRY CO., LTD. (No.168 Beijing Middle Road, Jinfeng District,Yinchuan, Ningxia 750011), 国家能源集团宁夏煤业有限责任公司 (中国宁夏回族自治区银川市金凤区北京中路168号), CHINA ENERGY NINGXIA COAL INDUSTRY CO., LTD. COAL CHEMICAL INDUSTRY TECHNOLOGY RESEARCH INSTITUTE (Ningxia Ningdong Energy and Chemical Base Coal Chemical Industry Park,Yinchuan, Ningxia 750409), 国家能源集团宁夏煤业有限责任...